Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Em que ano a instituição da Carolina do Norte se juntou à ACC?
 ###Tabelas: CREATE TABLE member_schools (member_schools_id AUTO_INCREMENT PRIMARY KEY, Institution VARCHAR, Nickname VARCHAR, Location VARCHAR, Founded INT, Joined ACC INT, School Type VARCHAR, ACC Football Titles INT) CREATE TABLE all_councils (all_councils_id AUTO_INCREMENT PRIMARY KEY, Party VARCHAR, County INT, City INT, Borough INT, Town INT, Total INT) CREATE TABLE player_win-loss_record (player_win-loss_record_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Total Win-Loss VARCHAR, Singles Win-Loss VARCHAR, Doubles Win-Loss VARCHAR, No. of ties INT, First year played INT, Years Played INT) CREATE TABLE composition_by_molecule_type (composition_by_molecule_type_id AUTO_INCREMENT PRIMARY KEY, Molecule VARCHAR, Percent of Mass VARCHAR, Mol.Weight (daltons) VARCHAR, Molecules VARCHAR, Percent of Molecules VARCHAR) CREATE TABLE list_of_presidents (list_of_presidents_id AUTO_INCREMENT PRIMARY KEY, Presidency INT, President VARCHAR, Date of Birth VARCHAR, Took office INT, Left office VARCHAR)  
SELECT MAX Joined ACC FROM member_schools WHERE Institution = North Carolina